CN218263240U

CN218263240U - Ultra-high strength optical cable reinforced core

Info

Publication number: CN218263240U
Application number: CN202220571779.2U
Authority: CN
Inventors: 沈国忠
Original assignee: Hangzhou Juli Insulation Co ltd
Current assignee: Hangzhou Juli Insulation Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2023-01-10
Anticipated expiration: 2032-03-16

Abstract

The utility model relates to an ultra-high strength optical cable reinforcing core, a plurality of aramid fiber threads are immersed in a modified epoxy resin liquid tank under the premise of tensioning of a rope rolling machine and are twisted into aramid fiber ropes, and the aramid fiber ropes dipped with the modified epoxy resin are dried by an inner aperture hole forming die to form rigid epoxy resin aramid fiber ropes; 2) The rigid epoxy resin aramid fiber rope surface is coated and dried by the modified EAA layer or the PE layer to form the double-layer optical cable reinforced core. The advantages are that: the defects of hardness, brittleness and poor toughness of the optical cable reinforced core are fundamentally overcome, and the tensile strength of the optical cable reinforced core is improved; secondly, the core wire in the optical cable reinforced core is designed to be in a rope-shaped structure, so that the tensile strength of the core wire is enhanced by multiple times, and the using amount of aramid fiber filaments is reduced by more than 35%; and thirdly, the modified EAA layer or the PE layer is used as a coating layer of the optical cable reinforced core, so that the optical fiber lines around the optical cable reinforced core are protected, and the phenomenon of hard touch between the optical cable reinforced core and the optical cable reinforced core is avoided.

Description

Ultra-high strength optical cable reinforced core

Technical Field

The utility model relates to a both had tensile strength high, it is little to have the percentage elongation again, can avoid again causing the superhigh strength optical cable reinforcement core of damage to optical cable, belong to optical cable reinforcement core and make the field.

Background

CN109749218B, name "a glass fiber optical cable reinforced core", include glass fiber and coating the glue solution on the glass fiber, the glue solution is made by the following raw materials by mass percent: 50-53% of EEA, 38-40% of EVA, 5% of silane coupling agent, 1% of curing stiffening agent and the balance of release agent; the silane coupling agent is silane containing organic functional groups of ethylene, acrylic acid or amine groups; the preparation method of the glass fiber optical cable reinforced core comprises the following steps: step 1, pouring EEA, EVA, a silane coupling agent, a curing stiffening agent and a release agent into a high-temperature melting box to melt to obtain glue solution; step 2, adding the glue solution into a first coating die and a second coating die, and controlling the temperature to be 240-260 ℃; step 3, extruding the glass fiber from the inlet of the first coating die, drawing the glass fiber from the outlet end after coating, and drying the glass fiber; step 4, winding the dried semi-finished product at a winding speed of 4m/min; step 5, extruding the semi-finished product from an inlet of a second coating die, drawing out the semi-finished product from an outlet end after soaking, and drying the semi-finished product; and 6, winding the finished product at the winding speed of 10m/min. The method has the following defects: firstly, the aramid fiber is only used as a reinforcing rib with ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance and light weight, and the cost of the manufactured optical cable reinforcing core is high under the condition of the same price; secondly, the manufactured optical cable reinforced core is hard and brittle and has poor plasticity, and the phenomenon of fracture and the like is easy to occur in the using process, so that the optical cable is damaged.

Disclosure of Invention

The design purpose is as follows: avoid not enough among the background art, design one kind and had both had tensile strength height, had again that the elongation is little, can avoid again causing the superhigh strength optical cable reinforcement core of damage to optical cable.

The design scheme is as follows: the design purpose is realized. The utility model discloses structural design is last: 1. many aramid fibers stretch-draw of light and be woven into the design of aramid fiber silk rope postcure in modified epoxy liquid, is one of the technical characteristics of the utility model. The purpose of this design is: the aramid fiber yarn is a novel high-tech synthetic fiber yarn, has the excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, has the strength of 5-6 times that of a steel wire, the modulus of 2-3 times that of the steel wire or glass fiber, the toughness of 2 times that of the steel wire, the weight of only about 1/5 that of the steel wire, and does not decompose or melt at the temperature of 560 ℃, so that the aramid fiber yarn has good insulating property and ageing resistance, and has a very long life cycle. The prior art singly uses the reinforcing rib as the reinforcing rib of the optical cable reinforcing core, so that the required amount is large, the rigidity of the optical cable reinforcing core manufactured by the prior art is insufficient, the diameter is thick, and the tensile strength of the manufactured optical cable cannot be well improved. The utility model discloses weave many aramid fibers into rope under the stretch-draw condition, so not only can improve its tensile strength, and the percentage elongation that can make the aramid fiber rope falls to minimum, simultaneously because many aramid fibers are drawn by force (tensioning state) and weave the shaping by the rope twisting machine in dipping modified epoxy liquid, modified epoxy fiber rope after its shaping not only the rigidity improves more than one time, toughness also improves, more importantly its percentage elongation has fallen to approximate zero, surpass the required tensile strength of optical cable far away, the security in the optical cable use has been ensured. 2. The modified epoxy resin aramid fiber silk rope after solidification is by modified EAA cladding or by PE clad design, is the technical characteristics two of the utility model. The purpose of this design is: the ethylene-acrylic acid copolymer is a material with thermoplasticity and extremely high cohesiveness, forms firm adhesion with the modified epoxy resin, has good toughness and can play a good role in protecting the coated optical fiber wire.

The technical scheme is as follows: the utility model provides an ultra-high strength optical cable strengthening core, includes the optical cable strengthening core, many aramid fiber silk cross-sections in the optical cable strengthening core are aramid fiber silk rope structure and aramid fiber silk on the cladding modified epoxy layer, by modified EAA layer cladding or by the PE coating on the epoxy layer.

Compared with the background art, the utility model, firstly, the defects of hard, crisp and poor toughness of the optical cable reinforced core are fundamentally solved, the tensile strength of the optical cable reinforced core is improved, and the application safety of the optical cable is ensured; secondly, the core wire in the optical cable reinforced core is designed to be in a rope-shaped structure, so that the elongation of the optical cable reinforced core is reduced, the tensile strength of the core wire is enhanced by multiple times, the using amount of aramid fiber is reduced by more than 35%, the manufacturing cost is reduced, and the diameter of the core wire is reduced; and thirdly, the modified EAA layer or the PE layer is used as a coating layer of the optical cable reinforced core, so that the tensile resistance is improved, the core wire is prevented from being broken and embrittled in a strong-pulling state, the optical fiber wires around the optical cable reinforced core wire are protected, and the phenomenon of hard touch between the core wire and the optical cable reinforced core wire is avoided.

Drawings

FIG. 1 is a schematic view of an end face structure of a reinforcing core of an ultra-high strength optical cable.

Fig. 2 is a schematic diagram of an end face structure of a reinforcing core of an ultrahigh-strength optical cable.

Detailed Description

Example 1: reference is made to figure 1. The utility model provides an ultra-high strength optical cable strengthening core, includes the optical cable strengthening core, many aramid fiber silk cross-sections in the optical cable strengthening core are aramid fiber silk rope 1 structure and aramid fiber silk on the cladding modified epoxy layer, by modified EAA layer cladding or by the PE coating on the epoxy layer. The aramid fiber filaments in the cured modified epoxy resin aramid fiber rope 1 are bonded into a whole by the modified epoxy resin 2. The hardness of the modified EAA layer or the PE layer is less than that of the modified epoxy resin layer. The production of a plurality of aramid filaments into a rope-like structure is prior art and will not be described here.

Example 2: reference is made to figure 2. Based on the example 1, the cured aramid fiber rope 1 is coated with a modified epoxy resin layer 4, and the modified epoxy resin layer is coated with a modified EAA layer or coated with a PE layer 4.

The modified epoxy resins are conventional and will not be described here. The modified EAA layer or PE layer is prior art and will not be described here.

It should be understood that: although above-mentioned embodiment is right the utility model discloses a design has done more detailed word description, but these word descriptions, are only right the utility model relates to a simple word description of idea, rather than right the utility model relates to a restriction of idea, any do not surpass the utility model relates to a combination, increase or the modification of idea all fall into the utility model discloses a within the protection scope.

Claims

1. The utility model provides an ultrahigh strength optical cable reinforced core, includes optical cable reinforced core, characterized by: many aramid fibers cross-section in the optical cable strengthening core are aramid fiber silk rope structure and aramid fiber silk go up the cladding modified epoxy layer, are covered or are covered by PE by modified EAA layer on the epoxy layer.

2. The ultra-high strength optical cable strength member of claim 1, wherein: the aramid fiber yarns in the modified epoxy resin aramid fiber yarn rope (1) are bonded into a whole by the modified epoxy resin (2).

3. The ultra-high strength optical cable strength member as claimed in claim 1, wherein: the hardness of the modified EAA layer or the PE layer is less than that of the modified epoxy resin layer.